Data Stadium is running a break down on Shinji Takahashi's current season. In looking at the numbers, it appears Takahashi has increased his ability to hit pitches down in the zone back up the middle. And while he's still pulling the ball quite a bit, the fact that he's going up the middle more means he's staying back in the box longer, which should mean he's getting a slightly better look at pitches.
I've taken the liberty to translate the tables they have up:
Horizontal Strike Zone
Vertical Strke Zone
Hit locations for pitches down
The only thing that's really missing from these charts is more information on the break downs (like in how many at bats).
BTW: for those that don't know, Data Stadium is the company that keeps track of all the stats for the NPB. What I would give to see all the information they have stored away on their servers...